High severityNVD Advisory· Published Jun 30, 2026· Updated Jul 1, 2026
Over-inclusive team membership expansion in GitHub App authentication provider for Rancher
CVE-2026-41053
Description
Incorrect authentication caching in the team member ship expansion of the Rancher Github authentication provider caused it granting principal access to any logged in user, in 2.13 before 2.13.6 and 2.14 before 2.14.2.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/rancher/rancherGo | >= 2.14.0, < 2.14.2 | 2.14.2 |
github.com/rancher/rancherGo | >= 2.13.0, < 2.13.6 | 2.13.6 |
github.com/rancher/rancherGo | < 0.0.0-20260519172014-d0c047bbc6d2 | 0.0.0-20260519172014-d0c047bbc6d2 |
Affected products
2- osv-coords2 versions
< 1.8.1-r32+ 1 more
- (no CPE)range: < 1.8.1-r32
- (no CPE)range: < 1.8.1-r28
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-4j6x-2764-m8ghghsaADVISORY
- github.com/rancher/rancher/security/advisories/GHSA-4j6x-2764-m8ghghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-41053ghsaADVISORY
- github.com/rancher/rancher/commit/361d4d57cd09b87f3c53f88af42046ffaa7b57e4ghsaWEB
- github.com/rancher/rancher/commit/d0c047bbc6d202e953d7557b82cbb354367db6aeghsaWEB
- github.com/rancher/rancher/pull/55093ghsaWEB
- github.com/rancher/rancher/pull/55147ghsaWEB
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